General description The PB100 Automotive Circuit Tester Probe is an essential tool for both professional mechanics and DIY enthusiasts. It provides a quick and accurate solution for diagnosing 12V - 24V electrical systems, including AC/DC voltage, diode current, and resistance power diagnostics. Technical specifications Voltage range: 12V - 24V Measurement types: AC/DC voltage, diode current, resistance Usage Activates components in vehicles or with ground Reads voltage displays with red/green polarity LED Tracks and locates shorts and bad ground contacts